Jewett lawrence



@nimh taire atent @frn REVOLVING TABLET FOR MULTIPLYING PHOTOGRAPHIG PICTURES.

dige tigihnle referrer in in ilgesr tettets ignari mit mailing pnt nf tigt sinne,

TO'ALL WHOM IT MAY CONOERN:

Be it known that I, JEWETT LAWRENCE, of Ripon, in the county of Fond du Lac, and in the State of Wiscousin, have invented certain new and useful Devices for Multiplying Photographic or other Pictures on the same plate; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, und to the letters of reference marked thereon.

In the annexed drawings, making part of this specification, A represents a frame, constructed of wood or any other suitable material, and similar to the ordinary camera obscura. To the back part of this frame or -camera is hinged a cross-bar, C, at one end; the other end is connected to the frame by an ordinary hook or catch.. This cross-bar C isV provided with a mortise, into which passes a standard, E. The standard is capable of vertical adjustment, and is stationed atlany desired point in the mortise by means of a pin, m. Upon the upper end of the standard is an arm, F, which said arm is provided at its outer end ivith a pin,j`, which has a. spring connected /with it for bearing it down. G represents the revolving tablet, which consists of a rim-wheel with three shoulders turned on its inner surface. D represents an annular door, which is hinged to the tablet G, and when shutrests againstthe shoulder, as seen from a: to z in said tablet. This door is provided, on its inner face, with the spring P, which said spring is intended for pressing the plate upon which the pictures are to be taken against the shoulder, from o to o. This picture-plate is of course nia-de annular in form. J represents an annular disk or plate, which tits against the third shoulder in the tablet. This disk is provided with an opening, ivhieh is covered or uncovered by the sliding door h, and is also provided with two cleats, a a', which fit in grooves a a in the frame A., The door 71- is provided with a handle, d, which its in a groove in the frame A, between the tivo grooves a a. The plate or dish J is stationary, while the tablet with its picture-plate revolves. c represents a pin which passes from the standard E into the door D. The tahlctframc G rests upon this pin e and revolves upon it. The periphery of the tablet G is provided with a series of holes, made at stated and regular distances apart, and the pinf'takes into these holes as the tablet is revolved, for the purpose of stationing it at any desired point. Loops, s s, are provided upon the outer face o' the door D, into which hooks catch for connecting the door to the eross-bar C. i

To take a picture with this machine, the picturc-platc, properly prepared, is placed in the tablet G; the door D is closed, and the tablet is hung upon its pin v. of the standard, and the cross-bar C is Closed and confined to the frame; the subject is suitably placed, and the sliding door i is raised. When one impression is taken upon the plate theA tablet is revolved partially, the pin f being first raised and then allowed to fall into the next hole made for it in the periphery. As fast as impressions are taken the tablet is partially revolved and stationed by the pinf. Each movement of the tablet presents a new surface for a picture. When pictures have been taken upon a given circle in the plate the bar C may be swung partially' around and the position of the tablet changed by raising or lowering the standard E, and thus presenting new surfaces for impressions.

This vtablet may be so arranged as to be used with any ordinary camere obscura'.

What I claim, is-

Thel revolving tablet G, the cross-har C, and the standard E, arranged in the camera as and for the purpose specified.

In'testimony that l claim the foregoing l. have hereunto set my hand and seal this second day ot' February, 1867.

JEWETT LAWRENCE. fr.. 5.] Witnesses:

H. B. WiLLIAMs, W. T. RUNAns. 

